MATomlinson: Evan Strickland, Mallory Mayeux, and Jake McLeod aboard a Mazatec taxi, Oaxaca, Mexico
MATomlinson: Matthew Garrett honors the previous expeditions at the local tienda outside San Augustin, Oaxaca, Mexico
MATomlinson: Easter market in Huautla de Jiménez, Oaxaca, Mexico
MATomlinson: Adam Byrd greets the morning in San Augustin, Oaxaca, Mexico
MATomlinson: sunrise on the Mazatec roads of Huautla de Jiménez, Oaxaca, Mexico
MATomlinson: looking across the Sotano de Rio Inglesia at sunrise, Oaxaca, Mexico
MATomlinson: Sotano de San Augustin, Oaxaca, Mexico
MATomlinson: exploring a new area, Oaxaca, Mexico
MATomlinson: PESH members taking a break, Oaxaca, Mexico
MATomlinson: PESH 2015 members hike through corn fields into Sotano de San Augustin, Oaxaca, Mexico
MATomlinson: Matthew Garrett at the lip of the San Augustin Entrance to Sistema Huautla, Oaxaca, Mexico
MATomlinson: Jacquelin Hawk negotiates down the San Augustin entrance of Sistema Huautla, Oaxaca, Mexico
MATomlinson: San Augustin entrance of Sistema Huautla, Oaxaca, Mexico
MATomlinson: lower Metro passage, San Augustin section of Sistema Huautla, Oaxaca, Mexico
MATomlinson: Andreas Klocker in the Metro 1, Sistema Huautla, Oaxaca, Mexico
MATomlinson: Andreas Klocker in the Metro 2, Sistema Huautla, Oaxaca, Mexico
MATomlinson: Adam Byrd, Kasia Biernacka, and Gilly Elor celebrate Anthodite Hall, Sistema Huautla, Oaxaca, Mexico
MATomlinson: Andreas Klocker with the Anthodites, San Augustin section of Sistema Huautla, Oaxaca, Mexico
MATomlinson: Adam Byrd crawls through new passage, La Grieta section of Sistema Huautla, Oaxaca, Mexico
MATomlinson: Mike Green humbly displays his muddy armhair dreds, La Grieta section of Sistema Huautla, Oaxaca, Mexico
MATomlinson: Adam Byrd cheeses for the camera, La Grieta section of Sistema Huautla, Oaxaca, Mexico
MATomlinson: me after a night in a shit bivy at Camp 3, Sistema Huautla, Oaxaca, Mexico